What is the best way to access DOM elements in Angular (Version 2.x and above)? Since basic functions such as addClass and removeClass are not available in typescript, how can we perform DOM manipulations in Angular components? Any suggestions would be greatly appreciated. TIA
To access your DOM elements, you can utilize the ViewChild decorator like this:
@Component({
....
templateUrl: 'mytemplate.html'
})
export class MyComponent{
@ViewChild('selector') private someName;
constructor() {
//this gives you access to your DOM element
//this.someName.nativeElement
}
}
In your template class, make sure to specify the selector:
<div #selector> </div>
Alternatively, you can also use the ElementRef class:
import {Component, AfterViewInit, ElementRef} from "@angular/core";
export class MyComponent implements AfterViewInit {
constructor(protected elementRef: ElementRef) {
}
ngAfterViewInit() {
//you can access your DOM element using
//this.elementRef.nativeElement
}
}
You have the flexibility to incorporate third-party libraries like jQuery for functionalities such as addClass and removeClass within typescript.
In typescript, the basic functions such as addClass and removeClass may not be readily available.
However, it is important to note that everything achievable in JavaScript can also be done in TypeScript. Although the usage of jQuery is discouraged in Angular2, it is still possible to incorporate it.
If you are seeking guidance on obtaining a reference to an element in Angular 2/TypeScript, you can refer to this helpful Stack Overflow post.
It is recommended in Angular2 to refrain from directly manipulating the DOM and instead utilize binding methods such as *ngFor, *ngIf, and various directives like [class.class-name]="true" or ngClass.
For more comprehensive information, you can visit https://angular.io/docs/ts/latest/guide/
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